Site path gets lost when switching between services

[paurkedal]

In recent Eliom versions, when an eliom service is configured under a <site/> tag and one switches from one service to another by following a link, RPC calls fails with 404 as they no longer includes the site path. The issue occurred after the 6.10.1 release, which I have pinned for production use at the moment.

To reproduce the issue I created a simple application using eliom-destillery where mysite.eliom and mysite.conf.in are modified. When opening localhost:8080/site/first, the ping button works. When following the link to localhost:8080/site/second, the ping gives 404 in the JS console and one can see in the access log that the site prefix of the path is lost.

[paurkedal]

I tried to trace where the site path gets lost by printing debugging info. It looks like

• Eliom_client.change_page receives an URI from create_request_ without the site path and then calls set_content ~replace ~uri ?fragment content at the end, which
• calls Eliom_request_info.set_session_info with the URI which extracts the path with Url.path_of_url_string and stores it in the path of the request info.
• As a result Eliom_request_info.get_original_full_path_string looses the site directory while Eliom_request_info.get_csp_original_full_path still contains it after a page change.